The high-speed X-ray camera on AXIS
Eric D. Miller, Marshall W. Bautz, Catherine E. Grant, Richard F., Foster, Beverly LaMarr, Andrew Malonis, Gregory Prigozhin, Benjamin Schneider, (Massachusetts Institute of Technology), Christopher Leitz (MIT Lincoln, Laboratory), Sven Herrmann, Steven W. Allen

TL;DR
The paper describes the design and testing of a high-speed, low-noise X-ray camera for the AXIS mission, enabling advanced high-energy astrophysics studies with improved detector technology.
Contribution
It introduces a novel high-speed, low-noise CCD detector system with integrated ASIC readout, tailored for the AXIS X-ray telescope, demonstrating performance improvements over previous detectors.
Findings
Achieved excellent noise performance at required readout speeds.
Demonstrated spectral response across the AXIS energy band.
Validated detector simulations and backside passivation techniques.
Abstract
AXIS is a Probe-class mission concept that will provide high-throughput, high-spatial-resolution X-ray spectral imaging, enabling transformative studies of high-energy astrophysical phenomena. To take advantage of the advanced optics and avoid photon pile-up, the AXIS focal plane requires detectors with readout rates at least 20 times faster than previous soft X-ray imaging spectrometers flying aboard missions such as Chandra and Suzaku, while retaining the low noise, excellent spectral performance, and low power requirements of those instruments. We present the design of the AXIS high-speed X-ray camera, which baselines large-format MIT Lincoln Laboratory CCDs employing low-noise pJFET output amplifiers and a single-layer polysilicon gate structure that allows fast, low-power clocking. These detectors are combined with an integrated high-speed, low-noise ASIC readout chip from Stanford…
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Taxonomy
TopicsParticle Detector Development and Performance · X-ray Spectroscopy and Fluorescence Analysis · Medical Imaging Techniques and Applications
